Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Leases
Operating lease cost	$ 373	$ 362	$ 1,104	$ 1,086
Operating lease payments	363	349	1,071	939
Operating lease right-of-use assets	5,293	6,313	5,293	6,313	$ 6,043
Operating lease liabilities	$ 5,649	$ 6,622	$ 5,649	$ 6,622
Weighted average remaining lease term	11 years	11 years	11 years	11 years
Weighted average discount rate	3.60%	3.60%	3.60%	3.60%
2025 (rest of year)	$ 460		$ 460
2026	783		783
2027	709		709
2028	315		315
2029	119		119
Thereafter	3,263		$ 3,263
Lessor, Operating Lease, Existence of Option to Extend [true false]			true
Property, plant and equipment, gross	706,826	$ 680,747	$ 706,826	$ 680,747	$ 682,561
Lease income	$ 1,831	1,839	$ 5,444	5,261
Maximum
Leases
Remaining lease term	16 years		16 years
Commercial real estate leased to third parties
Leases
Property, plant and equipment, gross	$ 51,228	$ 51,370	$ 51,228	51,370
Depreciation			$ 19,898	$ 18,756
Commercial real estate leased to third parties | Maximum
Leases
Lessor, renewal term	55 years		55 years